Roof Flood Test Procedure

Prior to beginning the flood test procedure conduct visual inspection of the waterproofing surface and look for pinholes voids uneven membrane coat thickness creases or other defects which may cause a leaking problem.

Roof flood test procedure.

A pressure differential that simulates wind is created between the interior and exterior of the building and the interior is inspected for any leaks. If you contemplate flooding your roof please check with your structural engineer. The aama testing involves a calibrated spray nozzle that applies water at a known rate and pressure to very limited and specific areas. In many parts of the country roof design live loads are 20 psf which for large tributary areas can be reduced to 12 psf.

Water height is maintained so as not to exceed a minimum level of 2 inches below the edge of flashings. Testing is performed for a minimum of 24 hours and maximum of 72 hours when rainfall is not forecasted to occur. 5 1 this test method is a standard procedure for determining water leakage through metal roof panel system sideseams endlaps and roof plane penetrations when the roof system is subjected to a specified static water pressure head. It is commonly referenced as the standard for flood testing roof systems.

Astm d5957 standard guide for flood testing horizontal waterproofing installations is a guide for conducting flood testing of horizontal surfaces with slopes no greater than 1 4 in. Is specifically designed for use under ceramic tile and stone and can be flood tested in 24 hours at 70 f 21 c or higher. Flood testing to detect leaks and verify the quality of newly installed assemblies has a long history in the roofing industry. Flood testing flood testing involves creating a dam or using a natural surround to pool water on a horizontal surface such as a roof terrace or plaza in order to identify leak locations or evalu ate waterproofing integrity.